Casement-window stay.



METTE Ai@ TQ,

ALFRED M. LANE, OF ST. LOUIS, MISSOURI, ASSIGIQ'OR TO MONARCH METAL WEATHER STRIP COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

GASEMENT-WINDOW STAY. p

Specification of Letters Patent.

Patented Apr. 3, 1917.,

Application led December 30, 1916. Serial No. 139,772. i i

To all fw/Lom t may concern:

Be it known that l, ALFRED M. LANE a citizen of the United States, land a resident of the city of St. Louis and State of Missouri, have invented a new and usefull Improveinent in Casement-Window Stays, of which the following is a specification.

This invention relates to props or stays for holding swinging windows'or doors in open or partly open position, and is an improvement on my Patent No. 1,176,969, dated March 28, 1916, for window adjusters.

The objects of the present invention are simplicity and strength of construction, and freedom from liability of derangement. The invention consists in the form and arrangement of the spring and friction shoes, and in the pivot fittings and manner of connecting the ends of the stay to the pivot fittings.

Further objects of the invention appear in the description of the selected form of device illustrated in the accompanying drawings, and what the invention consists in is further stated in the appended claims.

Tn the drawings, wherein the same reference characters designate like parts `in the several views,

Figure 1 is a horizontal section through the frame of a easement window, showinga top view of the swinging sash and stay in open position;

Fig. 2 is a vertical section through the window frame, showing the swinging sash and stay in side view;

Fig. 3 is a longitudinal section of the stay, taken on its axis, the spring and friction blocks being' shown in side elevation.;

Fig. 4 is a perspective view of the spring and friction blocks removed from the stay;

Fig. 5 is a transverse section of the stay on the line 5 5 in Fig` 3; and

Fig, 6 is a perspective view of a modified form of spring. i

The device may be applied in various ways to suit different kinds of windows. In the outwardly swinging casement window shown in the drawings, the window sash 11 has a groove or rabbet v12 in its top edge along its inner face and extending from the hinge edge nearly to the free edge. The location of the groove with respect to the sash, and the arrangement of the stay in the groove depends on the conditions of use and kind of window. The stay comprises two telescoping tubes, the outer tube 13 having a pivot blocklll at its end which, in the window shown in the drawings, is secured to the under side of the top member 15 of the window frame near the side member 16 of the frame to which the lwindow sash is hinged. The inner telescoping tube 17 has its outer end provided with a pivot block 18 which is piv'oted to a fitting' 19 which is screwed or attached in any suitable way to the sash 11 on the vertical side of the groove 12. This arrangement permits the stay to lie within the groove in the sash in both open and closed positions of the window, thereby concealing the stay from view in closed position,and shielding it from accidental injury in open position. v

The outer telescoping tube'13 is slightly larger inside than the outerdiameter of the inner tube 17, and contains a bushing 20 in its inner end snugly fitting around the inf'- ner tube. This bushing is pressed into the outer tube, the end of which is spun over to retainit in place. v

The inner tube has two alining openings through it on opposite sides, near its inner end. Friction slices 21 of fiber, bronze, wood, hard rubber or other non-corroding material, are arranged in these openings in the inner tube, their inner sides facing each other and separated by the sides of the tube, and their outer sides shaped to conform to the inner wall. of the outer tube 13. The friction shoes are pressed apart to bear against and frictioiially engage the inner wall of the outer tube 13 by means of U- shape springs 22 which are compressed and inserted in the end of the inner tube 17 between the friction shoes. The friction shoes 21 have grooves 23 across the middle of their inner sides, and the U-shaped springs 22 have rounded protuberances 2 4 engaging the grooves 23 to provide a 1oivotal bearing and insure uniform pressure on the shoes. These grooves and protuberances also hold the springs in place in the inner tubes.

The end blocks 14C and 18 are provided with grooves around them for the ends of the tubes 13 and 17 to be spun into to secure the blocks in place. The block 14 is provided with a transverse hole which is countersunk for the screw 25 which secures it to the window frame. A bushing 26 is arranged in the transverse hole in the block 14, the inner end of the bushing being flush with the bottom of the countersunk portion of the hole, and the outer end of the bushing having a flange which bears against the windowV frame. The block 14 is flattened around the edge of the hole for the bushing to fit against the flange. The screw 25 is screwed snugly home against the bushing to secure it, its head is `large enough to overlap the countersunk Vbottom of the hole and loosely hold the block in place to pivot on the bushing.

rlvhe spring shown in Fig. 6 is made of two half springs 27 which are slightly bowed and arranged with their bowed sides apart Y between the friction shoes.

The invention 'is not restricted to the details of construction shown and described.

I claim the following as my invention:

Y 1.'A' window prop comprising two telescoping tubular members, the inner end of the inner member having similarly shaped openings through its wall disposed on vopposite sides of its longitudinal axis, friction shoes with their outer faces conforming in shape to .the inner face of the wall of the outer teleseoping member disposed in said openings7 said friction shoes having pivot bearing surfaces on their inner faces, and spring means located between said friction shoes for pressing them apart, said spring means having pivot portions engaging the pivot bearing portions of said friction shoes.

2. A window prop comprising two telescoping tubular members, the inner end of the inner member having rectangular openings through its wall disposed on opposite sides of its longitudinal axis, rectangular friction shoes with their outer faces conforming in shape to the inner face of the wall of the outer telescoping'member disposed in said openings, said friction shoes having parallel ends which iit between the circumferential ends of said openings and having flat inner faces which are wider than said 4openings and which project across the longitudinal sides of said openings to guide them in said openings for outward radial movement and limit their inward movement, and spring means located between said frietion shoes for pressing them apart.

3. A window prop comprising two telescoping members, the inner end of the inner member being hollow and having openings through its wall disposed on opposite sides of its longitudinal axis, friction shoes disposed in said openings, said friction shoes having their outer faces conforming in shape to the inner face of the wall of the outertelescoping member, and spring means located between said friction shoes for pressing them apart, said spring means and said friction slices being provided with notches and lugs, repectively, on their adjacent faces for holding them in alinement in said inner member.

Signed at St. Louis, Missouri, this 27th day of December, 1916.

ALFRED M. LANE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatents, Washington, D. G. 

